1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
32 #include "main/formats.h"
33 #include "intel_screen.h"
36 struct intel_texture_image;
39 * Intel renderbuffer, derived from gl_renderbuffer.
41 struct intel_renderbuffer
43 struct gl_renderbuffer Base;
44 struct intel_region *region;
46 /** Only used by depth renderbuffers for which HiZ is enabled. */
47 struct intel_region *hiz_region;
50 * \name Packed depth/stencil unwrappers
52 * If the intel_context is using separate stencil and this renderbuffer has
53 * a a packed depth/stencil format, then wrapped_depth and wrapped_stencil
54 * are the real renderbuffers.
56 struct gl_renderbuffer *wrapped_depth;
57 struct gl_renderbuffer *wrapped_stencil;
61 GLuint draw_offset; /**< Offset of drawing address within the region */
62 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
67 * gl_renderbuffer is a base class which we subclass. The Class field
68 * is used for simple run-time type checking.
70 #define INTEL_RB_CLASS 0x12345678
74 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
75 * NULL will be returned if the rb isn't really an intel_renderbuffer.
76 * This is determined by checking the ClassID.
78 static INLINE struct intel_renderbuffer *
79 intel_renderbuffer(struct gl_renderbuffer *rb)
81 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
82 if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
83 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
92 * \brief Return the framebuffer attachment specified by attIndex.
94 * If the framebuffer lacks the specified attachment, then return null.
96 * If the attached renderbuffer is a wrapper, then return wrapped
99 static INLINE struct intel_renderbuffer *
100 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
102 struct gl_renderbuffer *rb;
103 struct intel_renderbuffer *irb;
105 /* XXX: Who passes -1 to intel_get_renderbuffer? */
109 rb = fb->Attachment[attIndex].Renderbuffer;
113 irb = intel_renderbuffer(rb);
119 if (irb->wrapped_depth) {
120 irb = intel_renderbuffer(irb->wrapped_depth);
124 if (irb->wrapped_stencil) {
125 irb = intel_renderbuffer(irb->wrapped_stencil);
136 * If the framebuffer has a depth buffer attached, then return its HiZ region.
137 * The HiZ region may be null.
139 static INLINE struct intel_region*
140 intel_framebuffer_get_hiz_region(struct gl_framebuffer *fb)
142 struct intel_renderbuffer *rb = NULL;
144 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
147 return rb->hiz_region;
153 intel_framebuffer_has_hiz(struct gl_framebuffer *fb)
155 return intel_framebuffer_get_hiz_region(fb) != NULL;
160 intel_renderbuffer_set_region(struct intel_context *intel,
161 struct intel_renderbuffer *irb,
162 struct intel_region *region);
165 intel_renderbuffer_set_hiz_region(struct intel_context *intel,
166 struct intel_renderbuffer *rb,
167 struct intel_region *region);
170 extern struct intel_renderbuffer *
171 intel_create_renderbuffer(gl_format format);
173 struct gl_renderbuffer*
174 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
175 int width, int height,
179 intel_alloc_renderbuffer_storage(struct gl_context * ctx,
180 struct gl_renderbuffer *rb,
181 GLenum internalFormat,
182 GLuint width, GLuint height);
185 intel_fbo_init(struct intel_context *intel);
189 intel_flip_renderbuffers(struct gl_framebuffer *fb);
192 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb,
193 struct intel_texture_image *intel_image,
197 intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
201 static INLINE struct intel_region *
202 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
204 struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
211 #endif /* INTEL_FBO_H */